Craig Venter is the 'Boris' of Biology and there is no denying that his passion for progress in genetics and slightly worrying drive to create Artificial Life is genuine.
What they did: In short his team made a synthetic copy of a bacterial genome (of 500 genes - we have about 25,000) and inserted it into another live host bacterial cell whose own DNA had been removed. This second cell was then only being controlled by the synthetic genome, as it's the DNA in the genome that directs the cell's activities. So this combination of synthetic genome plus the (already live) host was something totally novel, and the proof that it 'worked' is that this new bacteria went on to divide in the normal way that bacterial cells do.
Why it's not artificial life: While this is a significant achievement which took 15 years and £30m to create, I would argue however against the Economist's claim that 'mere mortals have now made artificial life' for the two main reasons. Firstly it's a copy of an existing, naturally occurring genome; and secondly it wouldn't have got anywhere without the live host cell, and all the essential stuff (polymerase enzymes, ribosomes, mRNA, mitochondria, cytoplasm) that the host cell contained. We haven't created new life-giving chemicals or designed a previously unknown live creature. And although the speed of DNA synthesis and experimentation is increasing, the staggering complexities of gene expression, incompatibility of genetic 'parts' and unpredictability of the cellular 'circuits' still constitute massive hurdles to progress.
Policy Implications: However the policy implications are still huge. For a start, if 'progress' is defined as steady improvement, what are we trying to improve, and why? And what are the risks of pursuing 'progress'? With such little public engagement in science, people will worry about what this means to them, to life, to safety. Life scientists will worry about 'GM' type rejection and security specialist's concern will revolve around the ignorancee of life scientists who are unaware of international treaties that exist to reduce bio-error. We may not be able to create artificial life, but someone could create artificial smallpox.....
The call for a moratorium from Human Genetics Alert on this science is no bad thing. It will raise the profile, allow us to analyse the benefits and assess the risk - ultimately increasing the public's confidence in decisions made. We shouldn't continue regardless just because we can.
